Old Janitrol heat pump

[kfreeman]

I have an old Janitrol heat pump that keeps burning out the compressor start capacitor. I can replace and it will melt one of the red wires from compressor and damage the capacitor. What would be a good approach to troubleshooting this problem? Could I poosibly be using too small a capacitor. A service person from a local company replaced the first one and I have had trouble ever since.